Power wash siding and walkways

Short answer

Each spring, power wash siding and walkways at 1500-2000 PSI, working top-down and keeping the nozzle 12 or more inches from the surface.

Priority: Low
Difficulty: DIY
Time: 2 hr
How often: Once a year
Season: Spring

Why It Matters

Mildew, dirt, and algae degrade siding finishes and make walkways slippery. Annual washing extends paint life and curb appeal.

Tools

Pressure washer
Garden hose

How to Do It

Connect the pressure washer to your water supply and set it to 1500-2000 PSI.
Start at the top of the siding and work downward in overlapping passes, keeping the nozzle at least 12 inches from the surface.
Hold the nozzle at a downward angle so water does not spray up under siding laps.
Move across each section steadily, letting water carry loosened mildew, dirt, and algae down and away.
Wash walkways last, directing runoff away from the foundation.

Repaint home exterior Every 5 years
Touch up exterior paint Once a year
Inspect foundation and exterior drainage Once a year

Part Of

Exterior Siding

Last updated 23 September 2026

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